Convert track-webvtt-tc[024-026] tests to testharness.js

third_party/WebKit/LayoutTests/media/track/track-helpers.js

 function enableAllTextTracks(textTracks) {
     for (var i = 0; i < textTracks.length; i++) {
         var track = textTracks[i];
         if (track.mode == "disabled")
             track.mode = "hidden";
     }
 }
 
 function assert_cues_equal(cues, expected) {
     assert_equals(cues.length, expected.length);
@@ skipping 27 matching lines @@
             func(trackElement.track);
         });
     }, "Check cues from " + src);
 }
 
 function assert_cue_fragment(cue, children) {
     var fragment = createFragment(children);
     assert_true(fragment.isEqualNode(cue.getCueAsHTML()));
 }
 
+function assert_cue_fragment_as_textcontent(cue, children) {
+    var fragment = createFragment(children);
+    assert_equals(cue.getCueAsHTML().textContent, fragment.textContent);
+}
+
 function createFragment(children) {
     var fragment = document.createDocumentFragment();
     cloneChildrenToFragment(fragment, children);
     return fragment;
 }
 
 function cloneChildrenToFragment(root, children) {
     for (var child of children) {
         var childElement;
         if (child.type == "text") {
             childElement = document.createTextNode(child.value);
+        } else if (child.type == "style") {

[fs, 2016/06/11 18:04:18]

I was actually thinking more like:

...
{ type: "span", style: { className: "..." }, value: [ ... ] }
...

and then here (in the "else" of type == "text"):

var styles = child.style || {};
for (var attr of Object.getOwnPropertyNames(styles))
    childElement[attr] = styles[attr];

[Srirama, 2016/06/12 06:06:16]

Done.

+            var style = child.value;
+            for (var attr of Object.getOwnPropertyNames(style))
+                root[attr] = style[attr];
         } else {
             childElement = document.createElement(child.type);
             cloneChildrenToFragment(childElement, child.value);
         }
         root.appendChild(childElement);
     }
 }